1
|
Torres ADS, Silveira JVWD, Torres MDM, Araujo CTPD, Galo R, Oliveira SGDD. Composite resin reinforced with silk nanoparticles from Bombyx mori cocoon for dental applications. Braz Dent J 2023; 34:67-74. [PMID: 37194858 DOI: 10.1590/0103-6440202304950] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2022] [Accepted: 02/24/2023] [Indexed: 05/18/2023] Open
Abstract
The objective of this work was to evaluate the mechanical performance of Z350 resin composite modified with Bombyx mori cocoons silk nanoparticles for dental applications. Four experimental groups were analyzed G0% = Filtek Z350 resin composite (control); G1% = Filtek Z350 with 1% of silk nanoparticles; G3% = Filtek Z350 with 3% of silk nanoparticles; G5% = Filtek Z350 with 5% of silk nanoparticles. It was employed scanning electron microscopy, energy dispersive X-ray spectroscopy, X-ray diffraction, 3-point flexural strength test, Knoop hardness test, and surface roughness. From 3-point flexural strength tests the control group presented the best results G0% = 113.33 MPa (±23.73). The higher flexural modulus was shown by groups G3% = 29.150 GPa (±5.191) and G5% = 34.101 GPa (±7.940), which are statistically similar. The Knoop microhardness test has shown statistical difference only among the G3% group between the top 80.78 (± 3.00) and bottom 68.80 (±3.62) and no difference between the groups. The roughness test presented no statistical difference between the groups. The incorporation of silk nanoparticles reduced the flexural strength of Z350 resin composite. The surface roughness and microhardness tests showed no changes in any of the groups studied.
Collapse
Affiliation(s)
- Adriana da Silva Torres
- Department of Dentistry, Faculty of Biological and Health Sciences, Federal University of Jequitinhonha and Mucuri Valleys; Diamantina-Minas Gerais, Brazil
| | | | - Moisés de Matos Torres
- Institute of Science and Technology, Federal University of Jequitinhonha and Mucuri Valleys; Diamantina- Minas Gerais , Brazil
| | - Cintia Tereza Pimenta de Araujo
- Department of Dentistry, Faculty of Biological and Health Sciences, Federal University of Jequitinhonha and Mucuri Valleys; Diamantina-Minas Gerais, Brazil
| | - Rodrigo Galo
- Department of Dental Materials and Prothesis, Faculty of Dentistry of Ribeirão Preto, University of São Paulo, Brazil
| | - Simone Gomes Dias de Oliveira
- Department of Dentistry, Faculty of Biological and Health Sciences, Federal University of Jequitinhonha and Mucuri Valleys; Diamantina-Minas Gerais, Brazil
| |
Collapse
|
2
|
Haroyan-Darbinyan E, Romeo-Rubio M, Río-Highsmith JD, Lynch CD, Castillo-Oyagüe R. Fracture resistance of cantilevered full-arch implant-supported hybrid prostheses with carbon fiber frameworks after thermal cycling. J Dent 2021; 116:103902. [PMID: 34822914 DOI: 10.1016/j.jdent.2021.103902] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2021] [Revised: 11/15/2021] [Accepted: 11/17/2021] [Indexed: 11/15/2022] Open
Abstract
OBJECTIVES This in vitro study aimed to find the best combination of mesostructure and veneering materials for full-arch implant-supported hybrid prostheses (HPs) in terms of the fracture resistance (FR) of their cantilevers. METHODS Three groups (n = 5 each) of maxillary HPs were fabricated: Group-1 (CC-A, control): Co-Cr frameworks coated with acrylic resin; Group-2 (CF-A): carbon fiber veneered with acrylic resin; and Group-3 (CF-R): carbon fiber coated with composite resin. All specimens were submitted to 5,000 thermal cycles (5 °C - 55 °C, dwell time: 30 s), and subjected to a single cantilever bending test in a universal testing machine (crosshead speed: 0.5 mm/min) until failure. The fracture pattern was assessed using stereo microscope and SEM. The one-way ANOVA and Bonferroni tests were run (α= 0.05). RESULTS The FR yielded significant differences among the three groups (p< 0.001). CC-A samples reached the highest FR values (p ≤ 0.001), whereas both CF-A and CF-R HPs exhibited the comparably (p = 0.107) lowest FR. CC-A specimens failed cohesively (100%): mostly without chipping (80%). CF-A mesostructures were always broken at the connections of the distal implants. CF-R prostheses often failed adhesively (80%). CONCLUSIONS The HPs made of Co-Cr veneered with acrylic demonstrated the best mechanical behavior, being the only group whose 13-mm long cantilevers exceeded the clinically acceptable FR of 900 N. The HPs constructed with carbon fiber frameworks showed, additionally, more unfavorable fracture patterns. CLINICAL SIGNIFICANCE For HPs with cantilevers up to 13 mm, Co-Cr mesostructures coated with acrylic may represent the optimum combination of materials.
Collapse
Affiliation(s)
| | - Marta Romeo-Rubio
- Faculty of Dentistry, Complutense University of Madrid (U.C.M.), Madrid, Spain.
| | | | - Christopher D Lynch
- University Dental School & Hospital/University College Cork, Wilton, Cork, Ireland.
| | | |
Collapse
|
3
|
Nakano LJN, Lopes GDRS, Firmino AS, de Matos JDM, Tango RN, Paes-Junior TJDA. Analysis of bond strength between a nylon reinforcement structure and dental resins. J Clin Exp Dent 2021; 13:e505-e510. [PMID: 33981399 PMCID: PMC8106934 DOI: 10.4317/jced.57654] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2020] [Accepted: 11/02/2020] [Indexed: 12/03/2022] Open
Abstract
Background Nylon is a polymer that its use to reinforce dental resins has shown positive results such as increased flexural strength. The aim of this study was to evaluate the bond strength between dental resins and a nylon reinforcement.
Material and Methods Forty cylindrical nylon blocks with 13 x 23 mm with 0.5% by volume of silica and 40 without were made. Half of the samples of each nylon composition were sandblasted with aluminum oxide (50μm) for 3 s (2.8 bar pressure, distance: 20 mm, incidence angle: 90o). On the nylon blocks, cylinders of chemically activated acrylic resin and indirect composite resin were made, with a bonding area of 6,28 mm2. Eight different groups were obtained according to the material used and the surface treatment (n = 10): Acrylic Resin + Nylon; GAS: Acrylic Resin + Nylon with Silica; GAT: Acrylic Resin + Nylon (Al2O3); GAST: Acrylic Resin + Nylon with Silica (Al2O3); GC: Composite Resin + Nylon; GCS: Composite Resin + Nylon with Silica; GCT: Composite Resin + Nylon (Al2O3); GCST: Composite Resin + Nylon with Silica (Al2O3). The shear test was carried out. The Student’s and the Kruskal-Wallis test was adopted.
Results There was no statistically difference in the bond strength for nylon with silica for the acrylic resin group. For the composite groups, nylon with silica did not present a statistically difference without surface treatment (p = 0.10) and with surface treatment the bond strength decreased (p = 0.000). The GCT showed a higher bond strength (0.89 MPa). The surface treatment improved the bond strength for the both groups.
Conclusions The presence of silica in the nylon composition did not influence the bond strength between materials evaluated. However, the surface treatment with aluminum oxide proved to be favorable for this adhesion. Key words:Nylons - Resins, Synthetic - Structures Strengthening - Dental Research.
Collapse
Affiliation(s)
- Leonardo-Jiro-Nomura Nakano
- Department of Prosthodontics and Dental Materials, São Paulo State University (Unesp) - Institute of Science and Technology, São José dos Campos - SP, Brazil
| | - Guilherme-da Rocha-Scalzer Lopes
- Department of Prosthodontics and Dental Materials, São Paulo State University (Unesp) - Institute of Science and Technology, São José dos Campos - SP, Brazil
| | - Aline-Silva Firmino
- Department of Dentistry, Universidade São Francisco UFS, Bragança Paulista - SP, Brazil
| | - Jefferson-David-Melo de Matos
- Department of Prosthodontics and Dental Materials, São Paulo State University (Unesp) - Institute of Science and Technology, São José dos Campos - SP, Brazil
| | - Rubens-Nisie Tango
- Department of Prosthodontics and Dental Materials, São Paulo State University (Unesp) - Institute of Science and Technology, São José dos Campos - SP, Brazil
| | - Tarcisio-José-de Arruda Paes-Junior
- Department of Prosthodontics and Dental Materials, São Paulo State University (Unesp) - Institute of Science and Technology, São José dos Campos - SP, Brazil
| |
Collapse
|
4
|
Cascos-Sanchez R, Molinero-Mourelle P, Ortega R, Agustin-Panadero R, Del Rio Highsmith J, Gomez-Polo M. Comparative In Vitro Study of the Bond Strength of Composite to Carbon Fiber Versus Ceramic to Cobalt-Chromium Alloys Frameworks for Fixed Dental Prostheses. MATERIALS 2020; 13:ma13143173. [PMID: 32708580 PMCID: PMC7411726 DOI: 10.3390/ma13143173] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/02/2020] [Revised: 07/10/2020] [Accepted: 07/13/2020] [Indexed: 11/16/2022]
Abstract
Purpose: The aim of this comparative in vitro study was to assess the bond strength and mechanical failure of carbon-fiber-reinforced composites against cobalt–chrome structures with ceramic veneering. Materials and methods: A total of 24 specimens (12 per group) simulating dental prosthetic frameworks were fabricated. The experimental specimens were subjected to a thermocycling aging process and to evaluate bond strength. All specimens were subjected to a three-point bending test to fracture using a universal testing machine. Results: The cobalt–chrome/ceramic group yielded a bond strength value of 21.71 ± 2.16 MPa, while the carbon-fiber-reinforced composite group showed 14.50 ± 3.50 MPa. The failure assessment reported statistical significance between groups. Although carbon-fiber-reinforced composite group showed lower bond strength values, the chipping incidence in this group was as well lower. Conclusions: The chrome–cobalt/ceramic group showed greater bonding strength compared to the carbon-fiber-reinforced composite; most of the fractures within the cobalt–chrome/ceramic group, had no possibility of direct clinical repair.
Collapse
Affiliation(s)
- Rocio Cascos-Sanchez
- Department of Conservative Dentistry and Orofacial Prosthetics, Faculty of Dentistry, Complutense University of Madrid, 28040 Madrid, Spain; (R.C.-S.); (J.D.R.H.); (M.G.-P.)
| | - Pedro Molinero-Mourelle
- Department of Conservative Dentistry and Orofacial Prosthetics, Faculty of Dentistry, Complutense University of Madrid, 28040 Madrid, Spain; (R.C.-S.); (J.D.R.H.); (M.G.-P.)
- Correspondence:
| | - Rocio Ortega
- Department of Prosthetic Dentistry, Faculty of Dentistry, European University of Madrid, 28670 Madrid, Spain;
| | - Ruben Agustin-Panadero
- Department of Stomatology, Faculty of Medicine and Dentistry, University of Valencia, 46010 Valencia, Spain;
| | - Jaime Del Rio Highsmith
- Department of Conservative Dentistry and Orofacial Prosthetics, Faculty of Dentistry, Complutense University of Madrid, 28040 Madrid, Spain; (R.C.-S.); (J.D.R.H.); (M.G.-P.)
| | - Miguel Gomez-Polo
- Department of Conservative Dentistry and Orofacial Prosthetics, Faculty of Dentistry, Complutense University of Madrid, 28040 Madrid, Spain; (R.C.-S.); (J.D.R.H.); (M.G.-P.)
| |
Collapse
|
5
|
Rahaman Ali AAA, John J, Mani SA, El‐Seedi HR. Effect of Thermal Cycling on Flexural Properties of Microcrystalline Cellulose‐Reinforced Denture Base Acrylic Resins. J Prosthodont 2019; 29:611-616. [DOI: 10.1111/jopr.13018] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/04/2019] [Indexed: 11/30/2022] Open
Affiliation(s)
| | - Jacob John
- Department of Restorative Dentistry, Faculty of DentistryUniversity of Malaya Kuala Lumpur Malaysia
| | - Shani Ann Mani
- Department of Pediatric Dentistry and Orthodontics, Faculty of DentistryUniversity of Malaya Kuala Lumpur Malaysia
| | - Hesham R. El‐Seedi
- Division of Pharmacgnosy, Department of Medicinal Chemistry, Biomedical CentreUppsala University Uppsala Sweden
| |
Collapse
|
6
|
Natarajan P, Thulasingam C. The effect of glass and polyethylene fiber reinforcement on flexural strength of provisional restorative resins: an in vitro study. J Indian Prosthodont Soc 2014; 13:421-7. [PMID: 24431771 DOI: 10.1007/s13191-012-0148-3] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2012] [Accepted: 06/27/2012] [Indexed: 12/01/2022] Open
Abstract
The aim is to evaluate and compare the flexural strength of different provisional restorative materials reinforced with glass and polyethylene fibers. A total of 90 samples were prepared and divided into three groups based on the type of fiber reinforcement, unidirectional S-glass (Splint-It) and ultra-molecular weight polyethylene (Ribbond). Unreinforced samples served as control group. Again each group was subdivided into three subgroups based on type of provisional restorative resins, heats cure polymethyl methacrylate, self-cure poly methyl methacrylate and self-cure bis-acryl composite. Samples were loaded in a universal testing machine until fracture occurs. The mean flexural strengths (MPa) were subjected to the one-way ANOVA, followed by the Tukey-HSD test at a significance level of 0.001. The result shows all the fiber reinforced samples possessed greater strength than the control samples. In control samples, the heat cure poly methyl methacrylate resin (72.74 ± 2.28 MPa) had the greatest flexural strength, followed by self-cure bis-acryl composite (67.05 ± 2.35 MPa) and self-cure poly methyl methacrylate resin (52.88 ± 1.90 MPa). In both heat and self-cure poly methyl methacrylate resin, the polyethylene fiber reinforcement (96.00 ± 2.63 MPa, 86.17 ± 1.92 MPa) provides the greatest strength than glass fiber reinforcement (92.68 ± 1.58 MPa, 76.40 ± 2.11 MPa). In self-cure bis-acryl composite, the glass fiber (105.95 ± 3.07 MPa) shows better reinforcement than polyethylene fiber (99.41 ± 1.74 MPa).The fibers reinforcement increases the flexural strength of provisional restorative resins.
Collapse
Affiliation(s)
- Parthasarathy Natarajan
- Department of Prosthodontics, Faculty of Dental Science, Sri Ramachandra University, Porur, Chennai, 600116 Tamil Nadu India
| | - C Thulasingam
- Department of Prosthodontics, Tamil Nadu Government Dental College and Hospital, Chennai, Tamil Nadu India
| |
Collapse
|
7
|
Segerström S, Sandborgh-Englund G, Ruyter EI. Biological and physicochemical properties of carbon-graphite fibre-reinforced polymers intended for implant suprastructures. Eur J Oral Sci 2011; 119:246-52. [DOI: 10.1111/j.1600-0722.2011.00826.x] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|
8
|
Erkmen E, Meriç G, Kurt A, Tunç Y, Eser A. Biomechanical comparison of implant retained fixed partial dentures with fiber reinforced composite versus conventional metal frameworks: A 3D FEA study. J Mech Behav Biomed Mater 2011; 4:107-16. [DOI: 10.1016/j.jmbbm.2010.09.011] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2010] [Revised: 09/19/2010] [Accepted: 09/25/2010] [Indexed: 11/29/2022]
|
9
|
Segerström S, Ruyter IE. Effect of thermal cycling on flexural properties of carbon–graphite fiber-reinforced polymers. Dent Mater 2009; 25:845-51. [DOI: 10.1016/j.dental.2008.12.007] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2008] [Accepted: 12/29/2008] [Indexed: 10/21/2022]
|
10
|
Segerström S, Ruyter IE. Adhesion properties in systems of laminated pigmented polymers, carbon-graphite fiber composite framework and titanium surfaces in implant suprastructures. Dent Mater 2009; 25:1169-77. [PMID: 19541363 DOI: 10.1016/j.dental.2009.04.009] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2008] [Revised: 02/06/2009] [Accepted: 04/17/2009] [Indexed: 11/29/2022]
Abstract
OBJECTIVE For long-term stability the adhering interfaces of an implant-retained supraconstruction of titanium/carbon-graphite fiber-reinforced (CGFR) polymer/opaquer layer/denture base polymer/denture teeth must function as a unity. The aim was to evaluate adhesion of CGFR polymer to a titanium surface or CGFR polymer to two different opaquer layers/with two denture base polymers. MATERIALS AND METHODS Titanium plates were surface-treated and silanized and combined with a bolt of CGFR polymer or denture base polymer (Probase Hot). Heat-polymerized plates of CGFR polymer (47 wt% fiber) based on poly(methyl methacrylate) and a copolymer matrix were treated with an opaquer (Sinfony or Ropak) before a denture base polymer bolt was attached (Probase Hot or Lucitone 199). All specimens were heat-polymerized, water saturated (200 days) and thermally cycled (5000 cycles, 5/55 degrees C) before shear bond testing. RESULTS Silicatized titanium surfaces gave higher bond strength to CGFR polymer (16.2+/-2.34 and 18.6+/-1.32) MPa and cohesive fracture than a sandblasted surface (5.9+/-2.11) MPa where the fracture was adhesive. The opaquer Sinfony gave higher adhesion values and mainly cohesive fractures than the opaquer Ropak. Different surface treatments (roughened or polished) of the CGFR polymer had no effect on bond strength. SIGNIFICANCE The fracture surfaces of silicatized titanium/CGFR polymer/opaquer layer (Sinfony)/denture base polymers were mainly cohesive. A combination of these materials in an implant-retained supraconstruction is promising for in vivo evaluation.
Collapse
Affiliation(s)
- Susanna Segerström
- NIOM, Nordic Institute of Dental Materials, P.O. Box 70, N-1305 Haslum, Norway.
| | | |
Collapse
|
11
|
Eliasson A, Wennerberg A, Johansson A, Ortorp A, Jemt T. The Precision of Fit of Milled Titanium Implant Frameworks (I-Bridge®) in the Edentulous Jaw. Clin Implant Dent Relat Res 2008; 12:81-90. [PMID: 19076180 DOI: 10.1111/j.1708-8208.2008.00131.x] [Citation(s) in RCA: 46] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
Affiliation(s)
- Alf Eliasson
- Department of Prosthetic Dentistry, Postgraduate Dental Education Center, Public Dental Health Service, Orebro, Sweden.
| | | | | | | | | |
Collapse
|
12
|
Ekstrand K, Hirsch JM. Malignant Tumors of the Maxilla: Virtual Planning and Real-Time Rehabilitation with Custom-Made R-zygoma Fixtures and Carbon–Graphite Fiber-Reinforced Polymer Prosthesis. Clin Implant Dent Relat Res 2008; 10:23-9. [DOI: 10.1111/j.1708-8208.2007.00057.x] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
|
13
|
Influence of thermal cycling on flexural properties of composites reinforced with unidirectional silica-glass fibers. Dent Mater 2008; 24:1050-7. [PMID: 18242687 DOI: 10.1016/j.dental.2007.12.003] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2007] [Accepted: 12/13/2007] [Indexed: 11/21/2022]
Abstract
OBJECTIVES The purpose was to investigate the effect of water storage and thermal cycling on the flexural properties of differently sized unidirectional fiber-reinforced composites (FRCs) containing different quantities of fibers. The effect of fiber orientation on the thermal expansion of FRCs as well as how the stresses in the composites can be affected was considered. METHODS An experimental polymeric base material was reinforced with silica-glass fibers. The cleaned and silanized fibers were sized with either linear PBMA-size or crosslinked PMMA-size. For the determination of flexural properties and water uptake, specimens were processed with various quantities of differently sized unidirectional fibers. Water uptake of FRC was measured. Water immersed specimens were thermally cycled for 500 and 12,000 cycles (5 degrees C/55 degrees C). Flexural properties of "dry" and wet specimens with and without thermal cycling were determined by a three-point bending test. The linear coefficients of thermal expansion (LCTE) for FRC samples with different fiber orientations were determined using a thermomechanical analyzer. RESULTS Water uptake of the FRC specimens increased with a decrease in fiber content of the FRC. Flexural properties of FRCs improved with increasing fiber content, whereas the flexural properties were not influenced significantly by water and thermal cycling. Fiber orientation had different effects on LCTE of FRCs. Unidirectional FRCs had two different LCTE in longitudinal and transverse directions whereas bidirectional FRCs had similar LCTE in two directions and a higher one in the third direction. SIGNIFICANCE The results of the study suggest that the surface-treated unidirectional silica-glass FRC can be used for long-term clinical applications in the oral cavity.
Collapse
|